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From "Stephen Colebourne" <scolebou...@btopenworld.com>
Subject Re: [lang] NumberUtils minimum, maximum, and xor
Date Tue, 24 Jun 2003 07:59:09 GMT
I agree that both methods should be added, but as they are array
manipulators I suggest patching ArayUtils. Then we can add other array
conversions for primitive numbers there too.
Stephen

----- Original Message -----
From: "_matthewHawthorne" <mhawthorne@alumni.pitt.edu>
To: <commons-dev@jakarta.apache.org>
Sent: Tuesday, June 24, 2003 3:44 AM
Subject: Re: [lang] NumberUtils minimum, maximum, and xor


> While working on the xor patch, I encountered the need to create the
> following method:
>
> boolean[] toPrimitiveArray(Boolean[])
>
> to avoid duplicating logic between handling primitive and object
> booleans.
>
> I made it private.  But would it be a good public addition?  Along with:
>
> Boolean[] toObjectArray(boolean[])
>
> Any thoughts or suggestions?
>
>
>
>
> On Mon, 2003-06-23 at 15:40, Stephen Colebourne wrote:
> > NumberUtils is best for this.
> >
> > Stephen
> >
> > ----- Original Message -----
> > From: "_matthewHawthorne" <mhawthorne@alumni.pitt.edu>
> > To: "Jakarta Commons Developers List" <commons-dev@jakarta.apache.org>
> > Sent: Monday, June 23, 2003 4:25 PM
> > Subject: RE: [lang] NumberUtils minimum, maximum, and xor
> >
> >
> > > I have a path and test for xor(boolean[]) that I will submit for
> > > BooleanUtils.
> > >
> > > I can also submit a patch for min and max with parameters short[],
> > > int[], long[], float[], and double[].  Would it make sense for this to
> > > go into lang.NumberUtils or a new class in lang.math?
> > >
> > >
> > >
> > >
> > > On Mon, 2003-06-23 at 02:08, scolebourne@btopenworld.com wrote:
> > > > I disagree. lang.math exists for very simple, common maths
operations.
> > Min/max is a good example of this. It should be extended to all
primitive
> > types.
> > > >
> > > > A little duplication here is OK. (Note that a year ago I wouldn't
have
> > written this, but it makes more sense to me now)
> > > >
> > > > Adding min(int[]) etc is also probably a good idea. It may be best
to
> > rename the methods to min and max to be compatable with [math]
(deprecating
> > as needed).
> > > >
> > > > On the boolean question, we have a BooleanUtils to add xor() to. Do
you
> > have a patch/test available?
> > > >
> > > > Stephen
> > > >
> > > > >  from:    Gary Gregory <ggregory@seagullsw.com>
> > > > > If we want to be consistent, we could deprecate [lang]'s min/max
and
> > point
> > > > > to [math]. This would parallel nicely with c.lang for java.lang
and
> > c.math
> > > > > for java.math. It does not seem right to add all primitive types
to
> > > > > c.lang.NumberUtils if min/max routines are in c.math.
> > > > >
> > > > > Gary
> > > > >
> > > > > -----Original Message-----
> > > > > From: Mark R. Diggory [mailto:mdiggory@latte.harvard.edu]
> > > > > Sent: Saturday, June 21, 2003 15:18
> > > > > To: Jakarta Commons Developers List
> > > > > Subject: Re: [lang] NumberUtils minimum, maximum, and xor
> > > > >
> > > > > Just to note: we have moved somwhat along these lines in the the
> > commons
> > > > > [math] sandbox component. Currently we have
o.a.c.m.stat.StatUtils:
> > > > >
> > > > > double min(double[] doubleArr)
> > > > > double max(double[] doubleArr)
> > > > >
> > > > > available there.
> > > > >
> > > > > -Mark Diggory
> > > > >
> > > > > _matthewHawthorne wrote:
> > > > > > I have 2 observations:
> > > > > >
> > > > > > (1) Currently, the following methods are in o.a.c.l.NumberUtils
> > > > > >
> > > > > > int maximum(int a, int b, int c)
> > > > > > long maximum(long a, long b, long c)
> > > > > > int minimum(int a, int b, int c)
> > > > > > long minimum(long a, long b, long c)
> > > > > >
> > > > > > I think it be more flexible to replace them with the following:
> > > > > >
> > > > > > int minimum(int[] intArr)
> > > > > > int maximum(int[] intArr)
> > > > > > long minimum(long[] longArr)
> > > > > > long maximum(long[] longArr)
> > > > > >
> > > > > > It also may be a good time to add any missing methods such as:
> > > > > >
> > > > > > short minimum(short[] shortArr)
> > > > > > short maximum(short[] shortArr)
> > > > > > float minimum(float[] floatArr)
> > > > > > float maximum(float[] floatArr)
> > > > > > double minimum(double[] doubleArr)
> > > > > > double maximum(double[] doubleArr)
> > > > > >
> > > > > > Any thoughts?
> > > > > >
> > > > > >
> > > > > > (2) After searching for an easy way to xor booleans, and not
finding
> > > > > > anything, I created a method:
> > > > > >
> > > > > > boolean xor(boolean[] boolArr)
> > > > > >
> > > > > > Would this be a good addition to NumberUtils?
> > > > > >
> > > > >
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> > > > >
> > > > >
> > > >
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